Which Starter Kits/ Add-ons do I need?

Hi everyone, I have a new build with a two zone heating system (upstairs & downstairs). I currently have two Honeywell CM707 (wired) thermostats. Which kits would I need to replace both of these with Tado thermostats? Would I need two wired starter kits? or one wired and one add on?

Thanks in advance!

Ash